Compressor Maps g2 Garrett T25

[cat4lyst]

Hey guys! I am just a lowly honda owner looking for a little help from the experts.

I recently acquired have a 2g eclipse garrett turbo t25. In reading around here, seems like this is a undesirable part for you all. I have a question about it. Just looking for a compressor map for this turbo. any help in finding one would really be appreciated, I have been all over the webs trying to find one.

466491-0006
Garrett t2566 .48c .49t

thanks everyone

 

[Diamond Star Werks]

Idk about a map but 16 psi is about max for IME. And with an upgrade in thrust plate it won't hold that for long. But if its going on a stock piston honda you should only run 8 psi max 6 to stay safe. So it should last for you stay in that range.

It is no good for us cause we push more boost with our lower CR and it can't handle plus it doesn't move enough air for our taste.

You should just buy a dsm.

 

[AK Maniak]

Like MJ said it isn't an ideal choice. 18psi is about as much as it can push before it just starts pushing hot air.

 

[Cdc1221]

Like MJ said it isn't an ideal choice. 18psi is about as much as it can push before it just starts pushing hot air.

On a 2.0, yes. On a 1.6 running a 9:1 CR i could see it going to 18 or 20 psi fairly easy. Smaller displacement obviously cant pull in as much air

 

[Diamond Star Werks]

On a 2.0, yes. On a 1.6 running a 9:1 CR i could see it going to 18 or 20 psi fairly easy. Smaller displacement obviously cant pull in as much air

I did not say it couldn't boost further i said you should not. I know an idiot now driving a mustang that ran 23 psi out of it on a 2g. doesn't mean he was actually making more hp up there. And it blew up in a week.

 

[Cdc1221]

Oh no i know mj. Definitely not good with our cars. I know, thats how i killed my t25. Wore slap through the thrust plate. Im saying on a smaller displacement engine that cant use at much air, 20 psi might be about the same amount of air volume as, say, 12 psi on a dsm

 

[mb3000]

This looks about right to me. Doesn't mean its a worth while upgrade though.

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[cat4lyst]

I have been searching for this all day! thank you sir. I Got this turbo for a good price and in really good shape. so it's going in the car d16.
It looks like i'd expect quick spooling, producing some mid range power. I am planing on running on 6-8 lbs.

Another question if I may, what is the stock wastegate actuator engagement pressure on this turbo?

 

[Diamond Star Werks]

I have been searching for this all day! thank you sir. I Got this turbo for a good price and in really good shape. so it's going in the car d16.
It looks like i'd expect quick spooling, producing some mid range power. I am planing on running on 6-8 lbs.

Another question if I may, what is the stock wastegate actuator engagement pressure on this turbo?

On my car a straight line ran 6-7psi

 

[Cdc1221]

Normally 11 psi

 

[Diamond Star Werks]

Normally 11 psi

Not with straight IM pressure. Unless you have an issue. Running a line straight from the IM runs 5-8 normally. Same on a 14b.

Op If wanting to run a dsm turbo on your honda the bigger the better. More air with less boost is what you want. Though it does cost more but if your going threw the trouble of adapting it might as well go bigger. If your budgeting you'll enjoy the t25 on the honda. Just keep your oil clean.

Also turbo failure will be the least of your worries if you start raising boost too high.

 

[Cdc1221]

Yea i always forget about the bcs, since i unhooked it on day two of owning my 2g.

 

[cat4lyst]

Op If wanting to run a dsm turbo on your honda the bigger the better. More air with less boost is what you want. Though it does cost more but if your going threw the trouble of adapting it might as well go bigger. If your budgeting you'll enjoy the t25 on the honda. Just keep your oil clean.

thanks MJ. you input is appreciated. I got a log manifold and downpipe with the turbo. Just happens to have come off the same model civic I have, so the adapting part is already done . I figured to run this guy to keep my budget in line, while making sure all the other associated upgrades are not skimped on. So its sort of and entry turbo for me. I have a feeling a upgrade will come in time... maybe a disco potato

looking at the map, for a 1.6L, efficiency range sweet spot would be ~8-10psi on this turbo, it looks like this will be a good start.

 

[JusMX141]

Stock pressure for a T25 actuator with a signal line direct from the compressor cover will be 9-11psi. What you'll actually read at the manifold depends on intercooler piping size, efficiency, and core size in relation to pressure drop.

This should be a relatively accurate map for a T25 assuming your exducer spec is 54mm.

PR = 14.7 + boost you want to run / 14.7. Assuming 10psi, plot 1.68 on the chart which is almost dead-center in the highest efficiency island.

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[Diamond Star Werks]

thanks MJ. you input is appreciated. I got a log manifold and downpipe with the turbo. Just happens to have come off the same model civic I have, so the adapting part is already done . I figured to run this guy to keep my budget in line, while making sure all the other associated upgrades are not skimped on. So its sort of and entry turbo for me. I have a feeling a upgrade will come in time... maybe a disco potato

looking at the map, for a 1.6L, efficiency range sweet spot would be ~8-10psi on this turbo, it looks like this will be a good start.

Like I said the bigger the turbo the better for a car with n/a pistons. The disco potato is a highly modified t28 who's efficiency range is higher pressure than you wanna run on on stock pistons.

My brother ran a t3-t4 on his b18/eg6 and it was pretty fast. Only he didn't change his head bolts and he lifted his head. That was at 10 psi.

After that he built a high CR B20.

 

[JusMX141]

I have a feeling a upgrade will come in time... maybe a disco potato

Since the T25 is already DSM-flanged, you're better-off with a Small 16G and an additional $800 in your pocket.